C. Carbon. Anything that contains Carbon is considered to be organic.
Oil (fossil fuels)
Coal (smog, soot, acid rain, etc.)
This condensation reaction is similar to that in which a peptide bond is formed between two amino acids (Chapter 3). Thus a single nucleic acid strand is a phosphate-pentose polymer (a polyester) with purine and pyrimidine bases as side groups. The links between the nucleotides are called phosphodiester bonds